[Patch v5 2/8] media: i2c: ov2659: Fix sensor detection to actually fail when device is not present

From: Benoit Parrot
Date: Mon Sep 30 2019 - 09:04:50 EST


Make sure that if the expected sensor device id register
is not recognized properly the failure is propagated
up so devices are not left partially initialized.

Signed-off-by: Benoit Parrot <bparrot@xxxxxx>
Signed-off-by: Jyri Sarha <jsarha@xxxxxx>
Acked-by: Lad, Prabhakar <prabhakar.csengg@xxxxxxxxx>
---
drivers/media/i2c/ov2659.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/media/i2c/ov2659.c b/drivers/media/i2c/ov2659.c
index 17573257097d..efbe6dc720e2 100644
--- a/drivers/media/i2c/ov2659.c
+++ b/drivers/media/i2c/ov2659.c
@@ -1330,11 +1330,12 @@ static int ov2659_detect(struct v4l2_subdev *sd)
unsigned short id;

id = OV265X_ID(pid, ver);
- if (id != OV2659_ID)
+ if (id != OV2659_ID) {
dev_err(&client->dev,
"Sensor detection failed (%04X, %d)\n",
id, ret);
- else {
+ ret = -ENODEV;
+ } else {
dev_info(&client->dev, "Found OV%04X sensor\n", id);
ret = ov2659_init(sd, 0);
}
--
2.17.1